/**
 * Copyright 2009 Takahiko Ito
 * 
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); 
 * you may not use this file except in compliance with the License. 
 * You may obtain a copy of the License at 
 * 
 *    http://www.apache.org/licenses/LICENSE-2.0 
 *        
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" BASIS, 
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
 * See the License for the specific language governing permissions and 
 * limitations under the License.
 */
package org.unigram.oluolu.extractor;

import org.unigram.oluolu.common.OluoluException;
import org.unigram.oluolu.common.Query;

/**
 * 
 */
public interface IExtractor {

    /**
     * Extract Query object from input String.
     * @param inputStr input string which contains user id,
     *                  session time and query string.
     * @return Query object extracted from inputStr
     * @throws OluoluException threw when input string is invalid.
     */
    Query extract(String inputStr)
        throws OluoluException;
}
